LACON, IL 61540 Weather Forecast & Current Conditions

Enter ZIP code or City, State   
    


LACON/MARSHALL CNTY, IL
Current Weather

7:55 AM CDT JUN 12, 2026
Clear
66°F
Feels Like: 66°F
Dewpoint: 57°F
Rel. Hum.: 73%
Visibility: 10 miles
Wind: SW at 5 mph
Pressure: 29.96 inches
Last 72 hours

Local Area Snow Depth

Illinois Current Weather

Illinois MOS Forecast Weather


Weather Map


(Automated weather data from NWS/FAA)
10-Day model forecast maps
2025 Hurricanes

LACON, IL 61540
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Sunny. Highs around 80. West winds 5 to 15 mph.
TONIGHT
Clear. Lows in the lower 60s. Southwest winds up to 10 mph.
SATURDAY
Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the mid 80s. Southwest winds 5 to 15 mph.
SATURDAY NIGHT
Showers and chance of thunderstorms. Lows in the lower 60s. Southwest winds 5 to 10 mph shifting to the northwest 5 to 15 mph after midnight. Chance of precipitation 90 percent.
SUNDAY
Cooler, sunny. Highs in the lower 70s. Northwest winds 10 to 20 mph.
SUNDAY NIGHT THROUGH MONDAY NIGHT
Mostly clear. Lows in the mid 50s. Highs in the mid 70s.
TUESDAY AND TUESDAY NIGHT
Partly cloudy. A 40 percent chance of thunderstorms. Highs in the upper 70s. Lows in the upper 50s.
WEDNESDAY
Partly sunny. Rain showers likely and chance of thunderstorms in the afternoon. Highs around 80. Chance of precipitation 60 percent.
WEDNESDAY NIGHT
Breezy. Showers and chance of thunderstorms in the evening, then partly cloudy with chance of thunderstorms after midnight. Lows in the lower 60s. Chance of precipitation 80 percent.
THURSDAY
Mostly sunny. Chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of thunderstorms 50 percent.

Visible Weather Satellite
LACON, IL 61540
Infrared Weather Satellite
LACON, IL 61540
NEXRAD Weather Radar
LACON, IL 61540

LACON/MARSHALL CNTY, IL 3 hourly weather forecast

weather forecast created  7:00 PM CDT  6/11/2026
Friday
12 JUN 2026
LACON, IL 61540 weather forecast Day 1, 0 hours 1 AM 63° 63° Clear 0%

0% Thunder
( 1% severe)
W   6 81% 57°
Low 58° LACON, IL 61540 weather forecast Day 1, 3 hours 4 AM 59° 60° Clear WSW   3 83% 54°
High 80° LACON, IL 61540 weather forecast Day 1, 6 hours 7 AM 61° 61° Clear 0%

0% Thunder
( 1% severe)
WSW   6 81% 55°

Clear



LACON, IL 61540 weather forecast Day 1, 9 hours 10 AM 71° 71° Clear W   7 61% 57°
LACON, IL 61540 weather forecast Day 1, 12 hours 1 PM 77° 79° Clear 0%

0% Thunder
( 4% severe)
W   9 52% 58°
LACON, IL 61540 weather forecast Day 1, 15 hours 4 PM 80° 81° Clear W   10 47% 58°
LACON, IL 61540 weather forecast Day 1, 18 hours 7 PM 79° 80° Clear 0%

0% Thunder
( 4% severe)
W   5 52% 60°
LACON, IL 61540 weather forecast Day 1, 21 hours 10 PM 69° 69° Clear   CALM 68% 58°
Saturday
13 JUN 2026
LACON, IL 61540 weather forecast Day 2, 0 hours 1 AM 65° 65° Clear 1%

0% Thunder
( 2% severe)
  CALM 78% 58°
Low 61° LACON, IL 61540 weather forecast Day 2, 3 hours 4 AM 64° 65° Partly Cloudy S   5 81% 58°
High 83° LACON, IL 61540 weather forecast Day 2, 6 hours 7 AM 66° 66° Clear 0%

0% Thunder
( 8% severe)
S   6 78% 59°

Increasing Clouds



LACON, IL 61540 weather forecast Day 2, 9 hours 10 AM 76° 78° Partly Cloudy SSW   9 62% 62°
LACON, IL 61540 weather forecast Day 2, 12 hours 1 PM 81° 82° Partly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 24% severe)
SSW   12 54% 63°
LACON, IL 61540 weather forecast Day 2, 15 hours 4 PM 83° 84° Mostly Cloudy SSW   12 51% 63°
LACON, IL 61540 weather forecast Day 2, 18 hours 7 PM 80° 82° Mostly Cloudy 70%
RAIN
***
0% Thunder
( 31% severe)
SW   9 58% 64°
LACON, IL 61540 weather forecast Day 2, 21 hours 10 PM 72° 72° Mostly Cloudy W   6 73% 63°

LACON/MARSHALL CNTY, IL extended weather forecast

Sunday
14 JUN 2026
Monday
15 JUN 2026
Tuesday
16 JUN 2026
Wednesday
17 JUN 2026
Thursday
18 JUN 2026
Low 61° Low 52° Low 53° Low 62° Low 66°
High 72° High 77° High 78° High 76° High 80°
LACON, IL 61540 weather forecast Day 3 LACON, IL 61540 weather forecast Day 4 LACON, IL 61540 weather forecast Day 5 LACON, IL 61540 weather forecast Day 6 LACON, IL 61540 weather forecast Day 7
Mostly Cloudy
47% Rain
Partly Cloudy
10% Rain
Mostly Cloudy
31% Rain
Overcast
60% Rain
Mostly Cloudy
48% Rain
SELECT BOX EXAMPLES:
for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:
Lacon, IL
Lacon, IL snow
Lacon, IL radar
IL map
-or-
-or-
-or-
 
61540
61540 snow
61540 radar
 
-or-
-or-
 
 
IL
IL snow
 
 
Copyright © 2024 WeatherStreet.com
Put our free WeatherStreet weather lookup on your web page.
Terms & Conditions